Description
MAX30100 Pulse Oximeter Heart Rate Sensor Module
MAX30100 Pulse Oximeter is an optical sensor that derives its readings from emitting two wavelengths of light from two LEDs – a red and an infrared one – then measuring the absorbance of pulsing blood through a photodetector.
This particular LED colour combination is optimized for reading the data through the tip of one’s finger. It is fully configurable through software registers, and the digital output data is stored in a 16-deep FIFO within the device. It has an I2C digital interface to communicate with a host microcontroller.
The pulse oximetry subsystem in the MAX30100 sensor consists of ambient light cancellation (ALC), 16-bit sigma delta ADC, and a proprietary discrete-time filter. This biomedical sensor has an ultra-low-power operation, which makes it ideal for battery-operated systems.
It can be used in wearable devices, fitness assistant devices, medical monitoring devices, etc. The MAX30100 module operates from 1.8V and 3.3V power supplies and can be powered down through software with negligible standby current, permitting the power supply to remain connected at all times.
Learn how to use MAX30100 with Arduino – Click Here
Download the datasheet of this sensor
MAX30100 Sensor Module Pinout
| Pin Name | Function |
|---|---|
| VIN | Power supply pin (3.3V or 5V from Arduino) |
| SCL | I2C Clock Line – Connect to Arduino’s SCL pin |
| SDA | I2C Data Line – Connect to Arduino’s SDA pin |
| INT | Interrupt pin – Goes low when data is ready or on pulse detection |
| IRD | Activates IR LED for heart rate and SpO2 monitoring |
| RD | Activates Red LED – Used for SpO2 measurement |
| GND | Ground – Connect to Arduino’s ground |
Features
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High signal-to-noise ratio (SNR) for improved measurement accuracy
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Measures the absorbance of pulsing blood to determine heart rate and SpO2
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Compact and fully integrated pulse oximetry and heart rate monitoring module
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Robust against motion artefacts and ambient light interference
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Operates at 3.3V – a complete pulse oximeter and heart rate sensor solution
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Integrated design with built-in LEDs, photodetector, and high-performance analogue front-end
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Optical sensor with IR and Red LEDs combined with a photodetector
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Ultra-low power consumption – ideal for wearable and battery-powered devices
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Supports high sample rate and fast data output for real-time monitoring
- I2C interface with an additional INT (interrupt) pin for efficient communication
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